Ionia Weather Forecast

    • 55
    • 71

    Chance Rain Showers

    • 63
    • 79

    Partly Sunny

    • 59
    • 80

    Rain Showers Likely

    • 53
    • 74

    Partly Sunny

    • 56
    • 75

    Partly Sunny

    • 63
    • 80

    Chance Rain Showers

Today 25 Aug Ontario

Mostly cloudy with a chance of Showers through early Afternoon, then mostly sunny late. Highs Ranging from the upper 60s on the Hilltops to the lower 70s across the lower Elevations. Northwest Winds around 10 Mph. Chance of rain 50 percent.

Tonight 25 Aug Ontario

Mainly clear in the Evening, then becoming partly cloudy with some patchy fog developing. Lows in the mid 50s. Light Winds.

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Ionia Temperature Statistics

August Temperature

Rochester, Greater Rochester International Airport (15.5 miles)

  • Lowest 21 August, 2026

    53.7 °F

  • Average August

    71.7 °F

  • Highest 5 August, 2026

    87.7 °F

Climate (2021–2026)

Rochester, Greater Rochester International Airport (15.5 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.6 °F
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